U1A1?https://www.bilibili.com/video/BV1Cz4y1j7kS?t=12.2

U1A2?https://www.bilibili.com/video/BV1hF411D7CQ?t=4.4

U1B1?https://www.bilibili.com/video/BV1yh4y1w7d7?t=4.1

U1B2?https://www.bilibili.com/video/BV1wu411c7nA?t=10.1

U2A1?https://www.bilibili.com/video/BV1jN411W7ap?t=6.2

U2A2?https://www.bilibili.com/video/BV1JV411w7P4?t=4.7

U2B1?https://www.bilibili.com/video/BV1D34y1A7uY?t=2.4

U2B2?https://www.bilibili.com/video/BV1Mu4y167jK?t=3.9

U3A1?https://www.bilibili.com/video/BV1xH4y1U7Sk?t=4.4

U3A2?https://www.bilibili.com/video/BV1GK4y1c7CW?t=3.4

U3B1?https://www.bilibili.com/video/BV1rw411m7tS?t=2.4

U3B2?https://www.bilibili.com/video/BV1vr4y1f76Z?t=2.2

U4A1?https://www.bilibili.com/video/BV1rz4y137b6?t=2.3

U4A2?https://www.bilibili.com/video/BV1xm4y1G7dQ?t=3.0

U4B1?https://www.bilibili.com/video/BV1QK4y1F7Hb?t=4.3

U4B2?https://www.bilibili.com/video/BV1dK4y1F7BV?t=3.9

U5A1?https://www.bilibili.com/video/BV1R8411y7nQ?t=2.4

U5A2?https://www.bilibili.com/video/BV1Lw411m7kr?t=4.0

U5B1?https://www.bilibili.com/video/BV1Fp4y1A7FY?t=2.9

U5B2?https://www.bilibili.com/video/BV1iN411n7jY?t=4.0

U6A1?https://www.bilibili.com/video/BV1Hw411m7kJ?t=2.6

U6A2?https://www.bilibili.com/video/BV1Bp4y1F7uc?t=2.7

U6B1?https://www.bilibili.com/video/BV1z84y1U7UB?t=2.4

U6B2?https://www.bilibili.com/video/BV1LK4y1c7Ni?t=2.9

U7A1?https://www.bilibili.com/video/BV1z34y1A7fw?t=2.5

U7A2?https://www.bilibili.com/video/BV1wN411n7Bc?t=3.0

U7B1?https://www.bilibili.com/video/BV1YF411m7hB?t=9.9

U7B2?https://www.bilibili.com/video/BV1Mh4y1h7HR?t=2.4

U8A1?https://www.bilibili.com/video/BV1fz4y1V7xn?t=2.9

U8A2?https://www.bilibili.com/video/BV1tF411m758?t=2.7

U8B1?https://www.bilibili.com/video/BV1ww411m7gJ?t=4.4

U8B2?https://www.bilibili.com/video/BV1434y1A729?t=3.5